* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.8;
    color: #333;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(90deg, #1a1a2e 0%, #16213e 100%);
    box-shadow: 0 2px 20px rgba(0, 255, 255, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 15px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 24px;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    padding: 8px 16px;
    border-radius: 20px;
}

.nav-menu a:hover {
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    color: #1a1a2e;
}

.hero-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.1) 100%);
}

.hero-content {
    text-align: center;
}

.hero-content h2 {
    font-size: 42px;
    color: #fff;
    margin-bottom: 20px;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.hero-desc {
    font-size: 18px;
    color: #ccc;
    margin-bottom: 40px;
}

.download-box {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 40px;
    border-radius: 20px;
    margin-bottom: 50px;
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.download-box h3 {
    font-size: 28px;
    color: #00ff88;
    margin-bottom: 15px;
}

.download-box p {
    color: #fff;
    font-size: 16px;
    margin-bottom: 25px;
}

.btn-download {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    color: #1a1a2e;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 18px;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.4);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.6);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: #00d4ff;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.feature-item .icon {
    font-size: 48px;
    display: block;
    margin-bottom: 15px;
}

.feature-item h4 {
    color: #00ff88;
    font-size: 20px;
    margin-bottom: 10px;
}

.feature-item p {
    color: #ccc;
    font-size: 14px;
}

.section-title {
    font-size: 36px;
    color: #fff;
    text-align: center;
    margin-bottom: 50px;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.products-section {
    padding: 80px 0;
    background: rgba(0, 0, 0, 0.3);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.product-card {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 35px;
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4);
}

.product-icon {
    font-size: 56px;
    text-align: center;
    margin-bottom: 20px;
}

.product-card h3 {
    color: #00ff88;
    font-size: 24px;
    margin-bottom: 15px;
    text-align: center;
}

.product-card p {
    color: #ddd;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-card ul {
    list-style: none;
}

.product-card ul li {
    color: #ccc;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.download-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
}

.download-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    align-items: start;
}

.download-info h3 {
    color: #00ff88;
    font-size: 32px;
    margin-bottom: 15px;
}

.version, .update-time {
    color: #ccc;
    font-size: 16px;
    margin-bottom: 10px;
}

.download-features {
    margin: 30px 0;
}

.download-features h4 {
    color: #00d4ff;
    font-size: 20px;
    margin-bottom: 15px;
}

.download-features ul {
    list-style: none;
}

.download-features ul li {
    color: #ddd;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.download-steps {
    margin: 30px 0;
}

.download-steps h4 {
    color: #00d4ff;
    font-size: 20px;
    margin-bottom: 15px;
}

.download-steps ol {
    color: #ddd;
    padding-left: 20px;
}

.download-steps ol li {
    padding: 8px 0;
}

.btn-download-large {
    display: inline-block;
    padding: 20px 50px;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    color: #1a1a2e;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    font-size: 20px;
    transition: all 0.3s;
    box-shadow: 0 5px 30px rgba(0, 255, 136, 0.4);
}

.btn-download-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0, 255, 136, 0.6);
}

.qr-box {
    background: #fff;
    padding: 30px;
    border-radius: 20px;
    text-align: center;
}

.qr-box p {
    color: #333;
    margin-bottom: 20px;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: #f0f0f0;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #ccc;
    color: #999;
}

.qr-tip {
    font-size: 12px;
    color: #666;
}

.news-section {
    padding: 80px 0;
    background: rgba(0, 0, 0, 0.3);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: #00d4ff;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

.news-date {
    color: #00d4ff;
    font-size: 14px;
    margin-bottom: 10px;
}

.news-card h3 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 15px;
    line-height: 1.5;
}

.news-card p {
    color: #ccc;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.news-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0, 212, 255, 0.2);
    color: #00d4ff;
    border-radius: 20px;
    font-size: 12px;
    margin-right: 10px;
}

.about-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.1) 100%);
}

.about-content h3 {
    color: #00ff88;
    font-size: 28px;
    margin-bottom: 20px;
}

.about-intro p {
    color: #ddd;
    font-size: 16px;
    line-height: 2;
    margin-bottom: 20px;
}

.about-features {
    margin: 50px 0;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature-box {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.feature-box h4 {
    color: #00d4ff;
    font-size: 20px;
    margin-bottom: 15px;
}

.feature-box p {
    color: #ccc;
    font-size: 14px;
    line-height: 1.8;
}

.about-stats {
    margin-top: 50px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.stat-item {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.stat-number {
    font-size: 42px;
    font-weight: bold;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    color: #fff;
    font-size: 16px;
}

.contact-section {
    padding: 80px 0;
    background: rgba(0, 0, 0, 0.3);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h3, .contact-form h3 {
    color: #00ff88;
    font-size: 28px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    margin-bottom: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.contact-icon {
    font-size: 36px;
}

.contact-item h4 {
    color: #00d4ff;
    font-size: 18px;
    margin-bottom: 5px;
}

.contact-item p {
    color: #ccc;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: #fff;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: #00d4ff;
}

.btn-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    border: none;
    border-radius: 8px;
    color: #1a1a2e;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.4);
}

.faq-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.faq-item h4 {
    color: #00d4ff;
    font-size: 18px;
    margin-bottom: 15px;
}

.faq-item p {
    color: #ccc;
    font-size: 14px;
    line-height: 1.8;
}

.keywords-section {
    padding: 60px 0;
    background: rgba(0, 0, 0, 0.3);
}

.keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.keyword-tag {
    padding: 10px 20px;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: #00d4ff;
    border-radius: 25px;
    font-size: 14px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: all 0.3s;
}

.keyword-tag:hover {
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    color: #1a1a2e;
}

footer {
    background: linear-gradient(90deg, #0f0c29 0%, #302b63 100%);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(0, 212, 255, 0.3);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: #00ff88;
    font-size: 20px;
    margin-bottom: 20px;
}

.footer-section p {
    color: #ccc;
    font-size: 14px;
    line-height: 2;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #999;
    font-size: 12px;
    margin-bottom: 10px;
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .hero-content h2 {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .download-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}